linux-kernel - [PATCH v2] kselftests/bpf: use ping6 as the default ipv6 ping binary when it exists

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Date:   Mon,  5 Nov 2018 16:57:48 +0800
From:   Li Zhijian <lizhijian@...fujitsu.com>
To:     Song Liu <songliubraving@...com>, shuah@...nel.org,
        netdev@...r.kernel.org, linux-kselftest@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, ast@...nel.org, daniel@...earbox.net,
        Li Zhijian <lizhijian@...fujitsu.com>,
        Philip Li <philip.li@...el.com>
Subject: [PATCH v2] kselftests/bpf: use ping6 as the default ipv6 ping binary when it exists

At commit deee2cae27d1 ("kselftests/bpf: use ping6 as the default ipv6 ping
binary if it exists"), it fixed similar issues for shell script, but it
missed a same issue in the C code.

Fixes: 371e4fcc9d96 ("selftests/bpf: cgroup local storage-based network counters")
CC: Philip Li <philip.li@...el.com>
Reported-by: kernel test robot <rong.a.chen@...el.com>
Signed-off-by: Li Zhijian <lizhijian@...fujitsu.com>
---
V2: Fix coding style: remove '{}' and 80+ characters per line

Signed-off-by: Li Zhijian <lizhijian@...fujitsu.com>
---
 tools/testing/selftests/bpf/test_netcnt.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/test_netcnt.c b/tools/testing/selftests/bpf/test_netcnt.c
index 7887df6..44ed7f2 100644
--- a/tools/testing/selftests/bpf/test_netcnt.c
+++ b/tools/testing/selftests/bpf/test_netcnt.c
@@ -81,7 +81,10 @@ int main(int argc, char **argv)
 		goto err;
 	}
 
-	assert(system("ping localhost -6 -c 10000 -f -q > /dev/null") == 0);
+	if (system("which ping6 &>/dev/null") == 0)
+		assert(!system("ping6 localhost -c 10000 -f -q > /dev/null"));
+	else
+		assert(!system("ping -6 localhost -c 10000 -f -q > /dev/null"));
 
 	if (bpf_prog_query(cgroup_fd, BPF_CGROUP_INET_EGRESS, 0, NULL, NULL,
 			   &prog_cnt)) {
-- 
2.7.4